Twitter.com is currently ranked 13 on Alexa. On October 31 at 7pm PST it will be ranked 13 or higher. (I've done nothing to investigate how rankings have been changing or how often.)

Created by ektimo on 2009-10-18; known on 2009-10-31; judged wrong by ektimo on 2009-11-03.

• ektimo estimated 80% on 2009-10-18
• Arenamontanus estimated 50% on 2009-10-19
• Arenamontanus estimated 60% on 2009-10-19
• ektimo   judged this prediction wrong on 2009-11-03.